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view Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Src/stm32f4xx_hal_pcd_ex.c @ 68:10386cdcba84
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author | Ideenmodellierer |
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date | Wed, 22 Aug 2018 18:54:01 +0200 |
parents | 5f11787b4f42 |
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/** ****************************************************************************** * @file stm32f4xx_hal_pcd_ex.c * @author MCD Application Team * @version V1.2.0 * @date 26-December-2014 * @brief PCD HAL module driver. * This file provides firmware functions to manage the following * functionalities of the USB Peripheral Controller: * + Extended features functions * ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @defgroup PCDEx PCDEx * @brief PCD Extended HAL module driver * @{ */ #ifdef HAL_PCD_MODULE_ENABLED /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ /* Private macros ------------------------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @defgroup PCDEx_Exported_Functions PCDEx Exported Functions * @{ */ /** @defgroup PCDEx_Exported_Functions_Group1 Peripheral Control functions * @brief PCDEx control functions * @verbatim =============================================================================== ##### Extended features functions ##### =============================================================================== [..] This section provides functions allowing to: (+) Update FIFO configuration @endverbatim * @{ */ /** * @brief Set Tx FIFO * @param hpcd: PCD handle * @param fifo: The number of Tx fifo * @param size: Fifo size * @retval HAL status */ HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size) { uint8_t i = 0; uint32_t Tx_Offset = 0; /* TXn min size = 16 words. (n : Transmit FIFO index) When a TxFIFO is not used, the Configuration should be as follows: case 1 : n > m and Txn is not used (n,m : Transmit FIFO indexes) --> Txm can use the space allocated for Txn. case2 : n < m and Txn is not used (n,m : Transmit FIFO indexes) --> Txn should be configured with the minimum space of 16 words The FIFO is used optimally when used TxFIFOs are allocated in the top of the FIFO.Ex: use EP1 and EP2 as IN instead of EP1 and EP3 as IN ones. When DMA is used 3n * FIFO locations should be reserved for internal DMA registers */ Tx_Offset = hpcd->Instance->GRXFSIZ; if(fifo == 0) { hpcd->Instance->DIEPTXF0_HNPTXFSIZ = (size << 16) | Tx_Offset; } else { Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16; for (i = 0; i < (fifo - 1); i++) { Tx_Offset += (hpcd->Instance->DIEPTXF[i] >> 16); } /* Multiply Tx_Size by 2 to get higher performance */ hpcd->Instance->DIEPTXF[fifo - 1] = (size << 16) | Tx_Offset; } return HAL_OK; } /** * @brief Set Rx FIFO * @param hpcd: PCD handle * @param size: Size of Rx fifo * @retval HAL status */ HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size) { hpcd->Instance->GRXFSIZ = size; return HAL_OK; } /** * @} */ /** * @} */ #endif /* HAL_PCD_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/